0xInsider publishes Wild Fields 1648 under the GitHub account 0xInsiderhq and shares the build on X as @0xInsiderf5, whose profile links the GitHub account and describes putting AI to work on games and films. No real name, team size or location is given.
A real-time strategy game on the Ukrainian steppe in 1648, in one browser tab: raise a Cossack town, train pikemen, musketeers, horsemen and field guns, and burn the rival town halls. The README says the code was written by Claude Opus 5.5.